The red starts from the blue after section 10 - look out for the mighty bridge of death on the blue, then do a left when it ends - the blue goes right. Singlespeed? There's no really big or long climbs so its down to your legs.

Follow blue around until you go over the little wooden bridge. Next bit of fireroad you get to, blue continues to the right, start of red is to the left.
Couple of bits where signage isn't great, but if you follow the tyre tracks you'll not go far wrong!

On the whole it is pretty well sign posted although there are a couple of sections where, if you are new to the area, may feel like you have been abandoned. One is at lower star post where the direction seems a bit vague and you end up on what feels like an old grass / mud trail rather than the newly manicured trails but keep following it and you will be ok.

Overall I think they have done a great job with the trails with some bits that are good fun. It's not the same "natural" experience that was available before but as a known ride I think it's good fun.